Trouble shooting
1
、
Can not switch on
:
no switch on
NO
Check 3.3V/12V/24V of power supply
Check PW
Only 3.3V
yes
Y
Check signal P
—
ON
,
Check DC-DC
DIMBL
—
ON of main IC link
part,check
to PW
N
Y
Check the peripheral circuit
Check reset
of mail IC,check solder of
Check IIC bus
main IC,check data fo NVM
signal of main
and reset it
i
Check crystal frequence
Содержание K-LED20HDT2
Страница 21: ...Chassis Block Diagram...
Страница 22: ...Power Supply Block Diagram...
Страница 23: ......
Страница 26: ...Size Document Number Rev Custom SHSF3201A28 101S MSD1306 1 Date Thursday April 30 2015 Sheet 2 of 9 5 4 3 2 1...
Страница 36: ......